Door lock



Aug. 19 1924.

l. D. BRILL DOOR LOCK Filed July 6, 1921 Inuenfong Patented Aug. 19,1924.

QUNITED STATES IRA DONOVAN BRILL, OF MARLINTON, WEST VIRGINIA.

noon LOCK.

Application filed. July 6,

- To all whom it may concern:

paratively few elements and in which some back.

of-the parts may be of stock form.

The invention consists in the features and combination and arrangementof parts hereinafter described and particularly pointed out in theclaims.

In the accompanying drawings Figure 1 is a vertical sectional viewthrough a portion of a door longitudinally along the knob spindle andknobs.

Fig. 2 is a horizontal sectional view taken longitudinally along thelatch.

Fig. 3 is a face view of a part of the door.

Fig. 4 is an edge view of the door and associated parts.

Fig. 5 is a detail view similar to Fig. 1 but with the parts in adifierent position Fig. 6 is a detail View, showing the spindle intransverse section, and the locking means therefor. I

Fig. 7 is a view of a detail.

In these drawings, 1 indicates the door which is mortised and recessedto receive the latch casing 52. The latch 3 is simply mounted withinthis casing and is pressed outwardly by a spring 4 contained in a recess5 in the latch, said spring bearing at its front end against the wall ofthe recess and at its rear end against an abutment 5 which is fixed tothe casing. The latch is connected by a flexible member such as a chain7 with the collar 8 mounted on the knob spindle 9 which latter is ofgenerally rectangular form in cross-section and fits within acorresponding opening in the operating member 8. When the knob is turnedin either direction the latch will be retracted against the pressure ofits spring by the turning of the collar or rotary member 8 which willcause the flexible connection 7 to draw the latch The latch casing isprovided with a suitable detent or look member for holding the latch inits forward position as will be described hereinafter and this detentmember is pivoted at 10 to the latch casing and is provided with aforwardly extending arm eria1 No. 482,779.

11 which ordinarily lies to one side of the edge of the latch so thatthe latter may be freely retracted. The detent is normally pressed intothis position by a spring 12. The detent has one end at 18 projectingthrough the side wall of the latch casing for a purpose hereinafterdescribed. The knob spindle 9 has on its opposite ends, as in usualpractice, the knobs 14 and 15 one of which 14 is secured thereto byscrew in the ordinary manner. These knobs may be of substantially stockform, modified however, as hereinafter mentioned. The spindle passesthrough a collar or member 16 which is mounted in a plate 16 fixed onthe inner side of one of the escutcheon plates 17, in the presentinstance this being the escutcheon plate 'which is on the outer side ofthe door. This member 16 has radially extending pins 18 to extend into agroove, recess or slot 19, Fig. 6, formed in the knob spindle and thesepins are borne upon by other pins 18 which are mounted in the plate 16carried by the escutcheon plate. The pins 18 are pressed inwardly bysprings 21 held in recesses in the plate 16, these springs being held inplace by any suitable means at the outer ends of the recesses such asplugs 22. The pins 18 are controlled by a controlling bar 23 slidablymounted in the knob spindle and having a finger button 24: at the endthereof, this finger button lying coaXially with the inner knob andprojecting from the face thereof. hen this controlling bar is pressedall the way inwardly by pressure exerted upon the finger button forcingthe latter toward the knob on the inside of the door as in Fig. 1,portions of this controlling bar will have a cam action on the innerends of the pins 18 and these pins will be forced outwardly against thepressure of the spring pins 18 until the joint or line of separationbetween the pins 18 and the spring pins 18 register with the line ofdivision or the joint between the rotary collar 16 and the surroundingplate 16" so that with the parts in this position the knobs can beturned to turn the spindle 9 and retract the latch for the opening ofthe door and this action will take place by a turning movement of eitherknob in either direction. In this action the pins 18 will ofier noobstruction tothe turning of the collar or rotary member 16 because, asabove stated,the ends of these pins will register with the line ofseparation at the point 18*. If, however, the controlling bar isdisplaced from the position above described by grasping the fingerbutton 2 f at the inside knob and pulling this away from i the knob, thecam portions of the controlling bar will be withdrawn from the innerends of the pins 18 and then, supposing the parts to be in normalposition with the pins 18 registering with the pins 18, the springs 21will force the pins 18 inwardly and these pins will cross the line ofseparation between the rotary collar 16 and the plate 16, see Fig. 6,and therefore turning of the spindle will be prevented because of thelocking action of the pins 18. In this locked position of the parts,however, the door may be opened by the use of a key 25 such as shown Iin Fig. 5, which will be inserted through a keyhole 26 in the outer knobso that the inner cam shaped end of this key will engage between theinner ends of the pins 18 and will force these pins outwardly so thatthe inner ends of pins 18 will be brought into registration with thecrevice or line of separation between the rotary collar 16 and thesurrounding plate 16. In other words, the ac tion of the key upon thepins will be the same as the action of the inner end of the controllingbar upon the pins, when this controlling bar is in its normal inwardposition. Under these conditions, the knob with its spindle can beturned because the pins 18' will then offer no obstruction and the latchwill be retracted to open the door.

The controlling bar may be retained in its several positions by anysuitable detent -means and as one form of such means, I

provide in the wall of the spindle suitable notches as indicated at 27to be engaged by a detent projection 28 on the controlling bar or rod.:I provide means by which the door may be locked and prevented frombeing opened from. the outside even with the use of a key, and this isaccomplished in a simple manner by giving to the controlling bar anadditional step movement such as will make its detent projection 28register with the outermost one of the notches 27 in the spindle. Inother words, this movement is an additional step over that necessary tolock the parts as above described. When the controlling bar is .given'this additional outward step movement by pulling upon the finger button24 a washer or suitable member 20 mounted on'the spindle and operated bythe movement of the controlling bar through the projection 29 will bebrought against the projectder 30 on the latch.

its advanced position takes place by means of the detent 11, 11 andentirely independent of the looking parts above described trolling barwhich in its normal inwardv position in respect to the inner knob willcontrol the locking devices such as pins 18, 18 to allow free operationof the latch and when it is drawn one step outwardly. will lock the knobspindle against operation, but will permit unlocking of the parts by theinsertion of the key on the outerside of the door, and when anadditional step movement is given to the controlling bar by pulling uponthe finger button, the lock will be set to prevent its unlocking fromthe outside of the doorby means of the key. Any suitable arrangement ofthe pins 18 may be employed. They may be of different lengths indifferent looks, or arranged in different numbers or in difierentlocations in respect to the knob spindle so that a great number ofpermutations would be secured.

In the case. where the device is used as a night latch it may be thrownout of action during the daytime, for which purposethe' knob would beturned to retract the latch and in doing this the spindle will make ahalf turn and when this is accomplished, by drawing the controller baroutwardly, the locking pins 18 will engage the recesses in the rotarycollar 16 diametrically opposite those which they cooperated with whenthe parts were locked with the door closed,

at which time, of course, the latch is projected. In other words, thelatch may be locked either in its outer or inward position by suitablymanipulating the knob and the controlling bar in a certain relation toeach other.

The key may be formed with a recess25 to receive a projection on thecontroller bar I and for getting 'VflIlOIlS permutations thls projectionmay be of difierentsizes', shapes or locations. The same is true of theshoulders or cam surfaces at the end of the controlling bar which actson the pins 18.

Reverting tothat condition of the lock resulting from pulling thecontrolling bar to its extreme outward limit and thus causing the latchto be locked in its outermost position, or in other words, with theparts in safety position, so that the lock cannot be operated by the keyfrom the outside of the door, it will be understood that the occupant ofthe room cannot lock himself out, because, should he set the lock in theabove position while the door is open he then will be unable to closethe door because the latch will be locked in its outermost position.

The occupant of the room cannot set the lock in safety position unlessthe door is first closed and he is within the room.

It will be seen that I utilize a substantially ordinary latch member asa locking bolt. This latch has a. beveled face which coacts with asuitable guard or keeper by which the latch will be retracted by acamming action and will snap into place within the keeper if the door ispushed to, and provided, of course, that the detent 10, 11 is not set atthe safety position by drawing the controller rod all the way out to itsextreme limit.

Where, therefore, I refer to a locking bolt in the appended claims, thisis to be interpreted to mean either a latch form of bolt or an ordinaryform of bolt.

Fig. 7 shows that the washer 20 is provided with projections 20* whichenter the longitudinal recess in the spindle so that contact can be madewith the shoulder on the controlling bar by which the collar isoperated.

The knob 15 is secured to the spindle by two rivets or screws 15 whichleave the key way free through the center of the spindle. The sides ofthe spindle may be connected also by a cross pin 23* which also will actas a guide for the controlling bar.

The screw 23 will also serve this purpose. This screw and pin passthrough slots in the controlling bar. The sides of the controlling barare sulficient-ly resilient in respect to each other at the portionsadjacent the knob 14 as will permit the detent 27 to operate properly.The latch is preferably provided with a recess in its side to receivethe end of the detent.

I claim:

1. A look for a door comprising a spindle, a locking bolt, a spindle topass through the door, a connection between the spindle and the lockingbolt for retracting it, locking means to prevent rotation of thespindle, and a slotted controlling rod extending from the said lockingmeans to the inside of the door, said controlling rod being movablelongitudinally of the spindle, in one position setting the spindlelocking means to prevent rotation of the spindle, in a second positionreleasing the same, and means operated by the controlling rod when setin a third position for locking the bolt independent of the spindlelock, substantially as described.

2. In combination in a lock for doors, a bolt, a rotary spindle passingthrough the door, a connection between the rotary spindle and the boltfor retracting the latter when the spindle is rotated, a slotted membermovable lengthwise of the spindle and projecting at the inner side ofthe door to be operated by the occupant of the room, and means forengaging and locking the bolt against retraction when the controllingmember is set in a certain position, said means consisting of a washersurrounding the spindle and engaged by a portion of the controlling rodto be moved thereby along the spindle and a detent to engage the boltoperated by said washer, substantially as described.

3. A door lock including a bolt, a casing therefor, a rotary spindle forretracting the bolt, a member movable longitudinally of the spindleoperable from without the lock, means engaging said bolt to preventretraction, said means being mounted upon the casing and operated bysaid longitudinally movable member.

4. A look including a bolt, a rotary slotted spindle for retracting saidbolt, means to prevent rotation of said spindle, a key insertable fromone side of the door to render ineffective said rotation preventingmeans, and a member located in the slot in said spindle and meansoperable by said member to prevent retraction of the bolt by said key.

In testimony whereof I affix my signature.

IRA DONOVAN BRILL.

